Glucose transporter type 5, or GLUT5, is a protein that helps transport fructose across cell membranes. It is primarily found in the intestines, kidneys, and certain tissues in the brain. GLUT5 plays a crucial role in the absorption of fructose from the diet, allowing cells to utilize this sugar for energy. Unlike other glucose transporters, GLUT5 specifically facilitates the movement of fructose rather than glucose. This specificity is important for maintaining proper sugar levels in the body. Dysfunction in GLUT5 can lead to issues with fructose absorption, potentially resulting in gastrointestinal problems or metabolic disorders.